In 2009, he co-founded the production team The Smeezingtons, responsible for the singles "Nothin' on You" by B.o. He featured on the hooks for both singles, becoming recognized as a solo artist.His debut studio album Doo-Wops & Hooligans (2010) included the international and U.He graduated from high school and moved to Los Angeles to pursue a musical career.
Mars is known for his stage performances and retro showmanship.
The song was a commercial success reaching number one in the United States, Australia, Canada, New Zealand, the UK, and several other countries.
According to Billboard Mars was the twelfth highest paid musician of 2013, with earnings of ,839,681.
Nevertheless, in a cover story for GQ magazine in 2013, Mars said "I was young, man! I wasn't thinking", he added: "I was given a number one record and I'm out doing dumb sh--." Mars confessed that he lied to the authorities about having done cocaine before, saying "I don't know where that came from", adding: "I was really intoxicated. So a lot of that is a big blur, and I try every day to forget and keep pushing." On February 13, 2011, Mars won his first Grammy Award for Best Male Pop Vocal Performance, having received six nominations: Best Rap Song and Best Rap/Sung Collaboration for "Nothin' on You", Record of the Year for "Nothin' on You" and "Fuck You", Song of the Year for "Fuck You", and Producer of the Year, Non-Classical at the 53rd Grammy Awards.
At the 54th Grammy Awards, Mars was nominated in six categories: Album of the Year and Best Pop Vocal Album for Doo-Wops & Hooligans, Record of the Year, Song of the Year and Best Pop Solo Performance for "Grenade", and Producer of the Year, Non-Classical.
He announced the album title Unorthodox Jukebox along with the ten songs which would make the final cut on the album, and the title of the first single, "Locked out of Heaven", which was released on October 1, 2012.